Blogger have introduced a new way to make money with your blog.Google Affiliate Ads can be easily added to your posts to display links and image ads connected to your content.The ads run through your AdSense account, payments will be added to your AdSense account so of course you will need an AdSense account to run the Affiliate ads.The ads can be easily added via the post settings in your Blogger Post Editor.Importantly Google Affiliate ads are only available to Bloggers in the USA.The Blogger team put together the video below to explain how it works.

Remember unlike AdSense affiliate ads are not "Pay Per Click", with Affiliate ads you earn a commission when a reader clicks through and buys the product.

I'm pretty sure it's just a phased roll-out. What's different is that Blogger's gadget needs to choose whether a particular advertiser is suitable for your blog, rather than you and the advertiser making a "human intelligence" decision. I can see why they'd be cautions.